Specification

December 4, 2020

1. References

• International Building Code, 2018

• ASCE 7-16, Minimum Design Loads for Buildings and Other Structures

• AWC NDS 2018, National Design Specification for Wood Construction

• ANSI/AWC SDPWS 2015, Special Design Provisions for Wind and Seismic

2. Design Loads

2.1 Gravity Design Loads

Dead Loads 15 psf (gravity loads)

8 psf (uplift cases)

Roof Live Load: 20 psf

Snow:

Ground Snow Load 60 psf

Exposure B

Importance Factor 1.0

Floor Live:

Residential/Floor Load 40 psf

2.2 Lateral Design Loads

Wind:

Basic Wind Speed (Ultimate/Strength Level) 115 mph

Exposure B

Importance Factor 1.0

Seismic:

Soil Site Class D

Occupancy Category II

Importance Factor 1.0

< 2.0

Seismic Design Category D/E

Light-Frame (wood) Bearing Walls

Sheathed w/ Wood Str. Panels 6.5

2.3 Foundation Design Loads

The foundation design loads are based on the above criteria.

PAGE 1
. References • • • • International Building Code, 2018 ASCE 7-16, Minimum Design Loads for Buildings and Other Structures AWC NDS 2018, National Design Specification for Wood Construction ANSI/AWC SDPWS 2015, Special Design Provisions for Wind and Seismic 2. Design Loads 2.1 Gravity Design Loads Dead Loads 15 psf (gravity loads) 8 psf (uplift cases) 20 psf Roof Live Load: Snow: Ground Snow Load Exposure Importance Factor Floor Live: Residential/Floor Load 60 psf B 1.0 40 psf 2.
PAGE 2
3. Design Basis 3.1 Material Specifications Wood: Studs, Roof Joists & Headers Spruce-Pine-Fir #2 or Hem-Fir #2 Southern Pine #2 fb = 2600 psi 2.0E fb = 1700 psi 1.3E ¾” Treated T&G Sturd-I-Floor Shtg. 7/16” OSB Shtg. 15/32” OSB Shtg. Pressure Treated Floor Framing LVLs LSLs Floor Sheathing (Plywood) Wall Sheathing (OSB ForceField) Roof Sheathing (OSB) Note: Plywood is assumed to conform to US PS1 and OSB is assumed to conform to US PS2. 3.